EP1451977A1 - Procede de transmission de donnees entre une unite centrale et plusieurs modules a l'aide d'une trame de protocole de donnees - Google Patents

Procede de transmission de donnees entre une unite centrale et plusieurs modules a l'aide d'une trame de protocole de donnees

Info

Publication number
EP1451977A1
EP1451977A1 EP02779155A EP02779155A EP1451977A1 EP 1451977 A1 EP1451977 A1 EP 1451977A1 EP 02779155 A EP02779155 A EP 02779155A EP 02779155 A EP02779155 A EP 02779155A EP 1451977 A1 EP1451977 A1 EP 1451977A1
Authority
EP
European Patent Office
Prior art keywords
data
modules
transmission
position information
central unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02779155A
Other languages
German (de)
English (en)
Other versions
EP1451977B1 (fr
Inventor
Holger Wulff
Bernd Pfaffeneder
Klaus-Dieter Meier
Ewald Mauritz
Heiko BÜHRING
Hans-Georg Bogenrieder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Siemens AG
Aumovio Microelectronic GmbH
Siemens Corp
Original Assignee
Robert Bosch GmbH
Conti Temic Microelectronic GmbH
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH, Conti Temic Microelectronic GmbH, Siemens AG, Siemens Corp filed Critical Robert Bosch GmbH
Publication of EP1451977A1 publication Critical patent/EP1451977A1/fr
Application granted granted Critical
Publication of EP1451977B1 publication Critical patent/EP1451977B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/0315—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for using multiplexing techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/403—Bus networks with centralised control, e.g. polling

Definitions

  • the invention relates to a method for data transmission between a
  • Central unit Central unit and a plurality of modules by means of a data protocol frame.
  • the object of the invention is therefore to provide a more secure method for data transmission. This task is due to the characterizing features of the claim
  • the basic idea here is to store the test information available in the modules for securing the data transmission when the position information is assigned, together with the position information, preferably in a non-volatile manner and at least once before the start of data transmission from the modules to the
  • Figure occupant protection system with a central unit and a plurality of modules to which sensors and / or occupant protection devices are connected
  • the figure shows an example of an occupant protection system of a motor vehicle, a data transmission system consisting of a central unit 1 and a plurality (1, 2 ... i ... n) of modules 2, the "i" th module 2.i being shown in more detail by way of example has been.
  • the modules 2 are made up of a bus system 5 consisting of one or more bus lines in any structure (e.g. ring, line or daisy chain).
  • each module 2.i is assigned a position p2.i and thus a section of the data protocol frame F by means of position information 41.i from the central unit 1.
  • the assignment takes place in an initialization phase before the start of normal operation, for example while the vehicle is being manufactured by the manufacturer, with the position information 41 .i from the module 2.i, for example its address and thus its position in the data protocol frame, in a non-volatile memory 4 .i is saved.
  • the module 2.i sends its data at this assigned position p2.i in the data protocol frame F.
  • the central unit 1 additionally transmits one to the modules 2.i in the initialization phase Test information 42.i, on the basis of which the stored position information 41.i is subsequently checked in normal operation both during transmission and in a manner essential to the invention.
  • This test information 42.1 is also stored in the non-volatile memory 4.
  • a check sum, a parity flag or comparable coding forms can also be used as test information.
  • the module 2.i also checks the stored position information 41.i for correctness at least once before the transmission of data using the check information 42.i and suppresses the transmission of its data to the bus system 5 in the event of a deviation.
  • the stored position information 41 would be checked again for correctness each time the data protocol frame was run on the basis of the test information 42, thus ensuring that all modules 2 transmit p2.i at the positions assigned to them.
  • This check for correctness or deviation of the stored position information 41 can be monitored in response to a diagnostic request from the central unit 1 or a diagnostic device and, if appropriate, can also be read out later.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Small-Scale Networks (AREA)

Abstract

L'invention concerne un procédé de transmission de données entre une unité centrale et plusieurs modules d'une trame de protocole de données. Actuellement, on effectue fondamentalement la surveillance la transmission entre une unité centrale et plusieurs modules à l'aide d'informations de contrôle. Toutefois, on a constaté que les informations importantes en termes de transmission de données, telles que les données de position, ont certes été transmises sans erreur aux modules mais que, dans le mode de fonctionnement normal suivant, notamment en cas de plusieurs arrêts de la tension de service, les données archivées dans une mémoire ne sont pas toujours conservées et donc entraînent des perturbations de la transmission de données. Selon l'invention, pour la sécurité de la transmission de données lors de l'affectation des données de position, les informations de contrôle présentes dans les modules sont mémorisées en même temps que les données de position et ce, de préférence de manière non volatile. Au moins une fois avant le commencement d'une transmission de données des modules à l'unité centrale, les données de position sont vérifiées à l'aide des informations de contrôle et éventuellement une transmission est supprimée. Cela peut être effectué sur un signal Marche ou, de préférence, avant le commencement de la transmission dans chaque trame de protocole de données.
EP02779155A 2001-10-20 2002-10-11 Procede de transmission de donnees entre une unite centrale et plusieurs modules a l'aide d'une trame de protocole de donnees Expired - Lifetime EP1451977B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10151927 2001-10-20
DE2001151927 DE10151927A1 (de) 2001-10-20 2001-10-20 Verfahren zur Datenübertragung zwischen einer Zentraleinheit und einer Mehrzahl von Modulen mittels eines Datenprotokollrahmens
PCT/DE2002/003837 WO2003036878A1 (fr) 2001-10-20 2002-10-11 Procede de transmission de donnees entre une unite centrale et plusieurs modules a l'aide d'une trame de protocole de donnees

Publications (2)

Publication Number Publication Date
EP1451977A1 true EP1451977A1 (fr) 2004-09-01
EP1451977B1 EP1451977B1 (fr) 2006-05-03

Family

ID=7703219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02779155A Expired - Lifetime EP1451977B1 (fr) 2001-10-20 2002-10-11 Procede de transmission de donnees entre une unite centrale et plusieurs modules a l'aide d'une trame de protocole de donnees

Country Status (3)

Country Link
EP (1) EP1451977B1 (fr)
DE (2) DE10151927A1 (fr)
WO (1) WO2003036878A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116112411B (zh) * 2022-12-23 2024-08-20 郑州煤机智能工作面科技有限公司 一种自动化设备测试方法及其系统、电子设备

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19620137C2 (de) * 1996-05-07 2000-08-24 Daimler Chrysler Ag Protokoll für sicherheitskritische Anwendungen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03036878A1 *

Also Published As

Publication number Publication date
DE10151927A1 (de) 2003-05-15
WO2003036878A1 (fr) 2003-05-01
EP1451977B1 (fr) 2006-05-03
DE50206702D1 (de) 2006-06-08

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